EP0907103A1 - Procédé et dispositif pour le revêtement par rideau d'un support en mouvement - Google Patents
Procédé et dispositif pour le revêtement par rideau d'un support en mouvement Download PDFInfo
- Publication number
- EP0907103A1 EP0907103A1 EP97810733A EP97810733A EP0907103A1 EP 0907103 A1 EP0907103 A1 EP 0907103A1 EP 97810733 A EP97810733 A EP 97810733A EP 97810733 A EP97810733 A EP 97810733A EP 0907103 A1 EP0907103 A1 EP 0907103A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- curtain
- porous plate
- porous
- liquid film
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 8
- 238000007766 curtain coating Methods 0.000 title description 2
- 239000000758 substrate Substances 0.000 title description 2
- 239000007788 liquid Substances 0.000 claims description 54
- 230000014509 gene expression Effects 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 4
- 238000005266 casting Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000009736 wetting Methods 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- YAFQFNOUYXZVPZ-UHFFFAOYSA-N liproxstatin-1 Chemical compound ClC1=CC=CC(CNC=2C3(CCNCC3)NC3=CC=CC=C3N=2)=C1 YAFQFNOUYXZVPZ-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C1/00—Photosensitive materials
- G03C1/74—Applying photosensitive compositions to the base; Drying processes therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/005—Curtain coaters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/30—Processes for applying liquids or other fluent materials performed by gravity only, i.e. flow coating
- B05D1/305—Curtain coating
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S118/00—Coating apparatus
- Y10S118/04—Curtain coater
Definitions
- the present invention relates to a method and an apparatus according to the preamble of the independent Claims.
- Such a procedure and one The apparatus is described in EP-A-0 740 197.
- the one in it disclosed areal guides brought one certain progress compared to the state of the art at that time Technology, but still have disadvantages:
- the Falling speed of the curtain decreases due to gravity from the place where the curtain is formed steadily in the direction of fall to, in the liquid film, however, that on the side guide flows down, the gravitation does not lead to one steady acceleration, but the surface speed of the liquid film decreases as a result of internal Friction at a constant value.
- curtain and Hitting the side guidance it is at most at one point possible to equate the two speeds, resulting from local distortions and constrictions in reduced curtain stability in the curtain edge zone results. Any casting solution, or liquid coating material considered.
- One of the main problems with the curtain casting process is that Maintaining a stable curtain, especially in the area around the side guides, which are necessary to Curtain contraction due to surface tension forces to avoid.
- the geometric design is particularly problematic the curtain side guides in case the curtain is narrower than the substrate to be coated.
- EP-A-0 737 521 also describes an approximately sheet-like Lateral guidance, but there is also the wetting liquid fed from above and a device for the separation the edge of the middle part of the curtain is needed.
- the present invention eliminates those described above Disadvantages, d. H. increases the stability of the curtain in which the liquid film on the sheet-like curtain side guide is designed so that its surfaces Speed anywhere along the side guide is identical to the falling speed of the curtain, and so no local distortions and constrictions in the Curtain leads and not a stationary wall in the form of a Knife blade is present in the lower part of the curtain, which slows down the curtain.
- a low-viscosity liquid flows in channel 15, preferably water, vertically downwards.
- the temperature this liquid must be the same as the temperature of the Pouring solution in the curtain.
- the width of the channel 15, that of the width of the porous plate 3 corresponds, see Fig. 1, must be selected so that depending on the curtain drop curve, the curtain turns on unhindered can adhere to the liquid film, preferably 10-20 mm.
- the depth of the channel must be slightly greater than the thickness of the liquid film flowing in it, 0.2 - 4.0 mm, preferably 0.5 - 3.0 mm.
- the base of the canal exists, except for the lowest Part, made of a porous material along the entire length which liquid flows which the liquid film on the Forms the side border.
- the liquid film thus formed is thus at every point along the flow direction Liquid fed so that the thickness of the Liquid film continuously from top to bottom increases, see also FIG. 3.
- the porous material is designed as a plate 2, the thickness H p of which varies over the length of the side guide.
- the liquid is fed into the porous plate from the inflow 9, which is arranged behind the porous plate 2 along the entire length of the side guide.
- This inflow is in turn connected to a liquid feed system, not shown, for example a reservoir with a pump.
- the thickness H p of the porous plate must be designed in such a way that just as much liquid can flow through the plate at any point that the downward surface speed of the liquid film formed on the other side of the plate corresponds exactly to the continuously increasing falling speed of the curtain.
- the thickness of the porous plate thus depends on the properties of the flow liquid and the porous medium, as well as on the liquid pressure p 0 behind the porous plate, which determines the minimum thickness of the plate.
- the dependence of the plate thickness on the distance along the plate and on the liquid pressure p 0 is shown by way of example in FIG. 4.
- the thickness of the porous plate varies a porosity of 0.47 and a liquid pressure behind the porous plate of 3000 Pa over a length of Side edges of 150 mm from about 2 mm to about 8.7 mm.
- the lower part 11 of the channel does not consist of one porous material, but from a solid, well-wetting Material.
- This lower part of the channel consists of one Lower part 13 and an upper part 14.
- the curtain side Surface 17 of the upper part is slightly opposite to the vertical inclined to increase the stability of the curtain. Of the Tilt angle is preferably 1 ° - 5 °.
- the suction slot 5 which is transverse to Liquid flow extends across the entire channel width.
- this suction slot which has a height of 0.1 - 1.0 mm, preferably has 0.3 - 0.5 mm, the liquid that flows through the porous plate and possibly also one small amount of curtain liquid, aspirated.
- This Edge is at the end of the lower part 13 of the Suction slot, the lower surface 18 of this lower part an angle to the horizontal of 1 ° - 60 °, preferably from 45 ° - 60 °.
- the edge 12 of the Suction slot is also a distance of 0 - 5 mm, preferably 1 - 3 mm, compared to the upper part 14 of the Suction slit. This protruding edge offers the Lateral fluid is an impact surface from which it is lighter can be suctioned off.
- the lower edge 12 of the suction slot is at a distance 0.1 - 1.0 mm, preferably 0.3 - 0.5 mm, above the Carrier track arranged. This short distance will avoided the curtain peeling off the edge forms a large bead on the carrier.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Coating Apparatus (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97810733A EP0907103B1 (fr) | 1997-10-03 | 1997-10-03 | Procédé et dispositif pour le revêtement par rideau d'un support en mouvement |
DE59702151T DE59702151D1 (de) | 1997-10-03 | 1997-10-03 | Verfahren und Apparatur zur Vorhangbeschichtung eines bewegten Trägers |
US09/165,989 US6048582A (en) | 1997-10-03 | 1998-10-02 | Method and apparatus for curtain coating providing a lateral liquid film velocity equal to the curtain falling velocity |
JP10282505A JPH11188299A (ja) | 1997-10-03 | 1998-10-05 | 移動支持体をカーテンコーティングする方法および装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97810733A EP0907103B1 (fr) | 1997-10-03 | 1997-10-03 | Procédé et dispositif pour le revêtement par rideau d'un support en mouvement |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0907103A1 true EP0907103A1 (fr) | 1999-04-07 |
EP0907103B1 EP0907103B1 (fr) | 2000-08-09 |
Family
ID=8230415
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97810733A Expired - Lifetime EP0907103B1 (fr) | 1997-10-03 | 1997-10-03 | Procédé et dispositif pour le revêtement par rideau d'un support en mouvement |
Country Status (4)
Country | Link |
---|---|
US (1) | US6048582A (fr) |
EP (1) | EP0907103B1 (fr) |
JP (1) | JPH11188299A (fr) |
DE (1) | DE59702151D1 (fr) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003049871A1 (fr) | 2001-12-13 | 2003-06-19 | Dow Global Technologies Inc. | Procede et appareil de couchage par voile |
EP1398084A1 (fr) | 2002-09-10 | 2004-03-17 | ILFORD Imaging Switzerland GmbH | Procédé et dispositif d'enduction au rideau d'un substrat en mouvement |
WO2005097352A1 (fr) | 2004-04-06 | 2005-10-20 | Polytype Converting S.A. | Dispositif et procede d'enduction par rideau |
EP2083119A1 (fr) * | 2008-01-22 | 2009-07-29 | Voith Patent GmbH | Unité d'application de rideau |
EP2198975A1 (fr) * | 2008-12-18 | 2010-06-23 | Voith Patent GmbH | Unité d'application de rideau |
DE102014013996A1 (de) | 2014-09-25 | 2016-03-31 | Andritz Küsters Gmbh | Verfahren und Vorrichtung zur Vorhangbeschichtung |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3923676B2 (ja) * | 1999-04-21 | 2007-06-06 | 株式会社東芝 | 基板処理方法 |
DE10117668A1 (de) * | 2001-04-09 | 2002-10-10 | Bachofen & Meier Ag Buelach | Vorrichtung zum Beschichten einer laufenden Materialbahn |
US7870833B2 (en) * | 2006-09-15 | 2011-01-18 | Ricoh Company, Ltd. | Slide curtain coating apparatus and slide curtain coating method |
JP5259135B2 (ja) * | 2007-07-31 | 2013-08-07 | 日本製紙株式会社 | カーテン塗布装置 |
JP5228227B2 (ja) * | 2007-12-05 | 2013-07-03 | ボイス パテント ゲーエムベーハー | カーテンコータのエッジガイド |
JP5439880B2 (ja) | 2008-03-17 | 2014-03-12 | 株式会社リコー | カーテン塗布装置及びカーテン塗布方法 |
US8522713B2 (en) | 2008-07-22 | 2013-09-03 | Ricoh Company, Ltd. | Curtain coating method and curtain coating apparatus |
JP2011050816A (ja) * | 2009-08-31 | 2011-03-17 | Voith Patent Gmbh | カーテンコータのエッジガイド |
DE102012004875B3 (de) * | 2012-03-10 | 2012-07-19 | Andritz Küsters Gmbh | Vorrichtung zur Vorhangbeschichtung einer laufenden Warenbahn |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2021001A (en) * | 1977-11-09 | 1979-11-28 | Fuji Photo Film Co Ltd | Curtain Coating |
US4479987A (en) * | 1983-01-04 | 1984-10-30 | Agfa-Gevaert Aktiengesellschaft | Process and an apparatus for stabilizing free-falling liquid curtains |
EP0740197A1 (fr) * | 1995-04-26 | 1996-10-30 | Ilford Ag | Procédé et appareil pour le revêtement par rideau d'un support en mouvement |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3632374A (en) * | 1968-06-03 | 1972-01-04 | Eastman Kodak Co | Method of making photographic elements |
JPH01199668A (ja) * | 1988-02-01 | 1989-08-11 | Fuji Photo Film Co Ltd | 塗布装置 |
US4830887A (en) * | 1988-04-22 | 1989-05-16 | Eastman Kodak Company | Curtain coating method and apparatus |
EP0606038B1 (fr) * | 1993-01-07 | 1999-08-18 | Eastman Kodak Company | Dispositif d'enduction au rideau avec évacuation du bord |
DE19513531A1 (de) * | 1995-04-10 | 1996-10-17 | Du Pont Deutschland | Verfahren und Vorrichtung zur Verminderung von Störungen beim Vorhanggießen |
-
1997
- 1997-10-03 EP EP97810733A patent/EP0907103B1/fr not_active Expired - Lifetime
- 1997-10-03 DE DE59702151T patent/DE59702151D1/de not_active Expired - Lifetime
-
1998
- 1998-10-02 US US09/165,989 patent/US6048582A/en not_active Expired - Fee Related
- 1998-10-05 JP JP10282505A patent/JPH11188299A/ja active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2021001A (en) * | 1977-11-09 | 1979-11-28 | Fuji Photo Film Co Ltd | Curtain Coating |
US4479987A (en) * | 1983-01-04 | 1984-10-30 | Agfa-Gevaert Aktiengesellschaft | Process and an apparatus for stabilizing free-falling liquid curtains |
EP0740197A1 (fr) * | 1995-04-26 | 1996-10-30 | Ilford Ag | Procédé et appareil pour le revêtement par rideau d'un support en mouvement |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003049871A1 (fr) | 2001-12-13 | 2003-06-19 | Dow Global Technologies Inc. | Procede et appareil de couchage par voile |
EP1398084A1 (fr) | 2002-09-10 | 2004-03-17 | ILFORD Imaging Switzerland GmbH | Procédé et dispositif d'enduction au rideau d'un substrat en mouvement |
US7160579B2 (en) | 2002-09-10 | 2007-01-09 | Ilford Imaging Switzerland Gmbh | Method and device for coating a moving web |
WO2005097352A1 (fr) | 2004-04-06 | 2005-10-20 | Polytype Converting S.A. | Dispositif et procede d'enduction par rideau |
EP2083119A1 (fr) * | 2008-01-22 | 2009-07-29 | Voith Patent GmbH | Unité d'application de rideau |
EP2198975A1 (fr) * | 2008-12-18 | 2010-06-23 | Voith Patent GmbH | Unité d'application de rideau |
DE102014013996A1 (de) | 2014-09-25 | 2016-03-31 | Andritz Küsters Gmbh | Verfahren und Vorrichtung zur Vorhangbeschichtung |
EP3006115A1 (fr) | 2014-09-25 | 2016-04-13 | Andritz Küsters GmbH | Procede et dispositif destines au revetement de rideau |
Also Published As
Publication number | Publication date |
---|---|
US6048582A (en) | 2000-04-11 |
DE59702151D1 (de) | 2000-09-14 |
JPH11188299A (ja) | 1999-07-13 |
EP0907103B1 (fr) | 2000-08-09 |
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